GENEVA, Aug. 21 -- YUNNAN POWER GRID CO., LTD filed a patent application (CN2025/125553) for “DIGITAL OPERATION AND MAINTENANCE METHOD AND SYSTEM FOR RELAY-PROTECTION SECONDARY CIRCUIT”. With publication no. WO/2026/170729, here are the other details related to the patent application:
Kind: Initial Publication with ISR [A1]
IPC: H02J 13/00
Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the World Intellectual Property Organization (WIPO).
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